Book/Report

FZJ-2018-02812

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Gitterdynamik von kubisch flächenzentriertem und kubisch raumzentriertem Kalzium

Heiroth, M. (Corresponding author)FZJ*

1987
Kernforschungsanlage Jülich, Verlag Jülich

Please use a persistent id in citations: http://hdl.handle.net/2128/18435

Report No.: Juel-2161

Abstract: The phonon dispersion curves of Ca in the fcc and bcc phase have been derived from inelastic neutron scattering measurements of polycrystalline samples. The elastic constants were determined from the low-frequency part of the spectra. No pronounced softening of the elastic shear constants towards the martensitic phase transformation could he observed within the accurancy of the measurement. The high frequency part of the neutron spectra was analysed in terms of Born-vonKarman models and pseudopotential models. Even though pronounced phonon anomalies are absent in both phases, the results show that a simple pseudopotential picture is inadequate.

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Contributing Institute(s):

1. Publikationen vor 2000 (PRE-2000)

Research Program(s):

1. 899 - ohne Topic (POF3-899) (POF3-899)

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Database coverage:

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